- resolveTelemetryPatch: extracted pure switch resolution (unit-tested);
fails loud when DSH_TELEMETRY_DISABLED is set but the row is absent, and
documents that ANY non-empty value (including '0'/'false') disables.
- runHeadless: SIGINT/SIGTERM now dispose the tree before exit so the
telemetry tail and shutdown marker drain (Node's default signal exit
skips disposal).
- web.cordis.yml: explicit maxQueueSize beside maxExportBatchSize (the
single-batch drain invariant no longer leans on an SDK default), comment
covers exportTimeoutMillis's role and links the Agent Note.
- apps/web scaffold: disable telemetry-otel — fixture sessions must never
leave the process.
- apps/cli README (en/zh + pairing): document the default endpoint, both
env seams, and the no-redaction disclosure.